Yes, as kefs already said, if you can view it you can download it (your browser also does it every time you view one). Our app is merely to zip it together.
A bit off-topic, but isn't HN checking whether a URL has already been submitted before?
I ask because sometimes I tried to submit an article that was already there and HN just pointed me to the original discussion, so I don't understand how can duplicates happen.
If upvotes were public (or at least available to you when logged in), it could just trawl HN's history at some set interval (one year past?) and feed you anything you upvoted that day.
edit: or rather, a few intervals to allow for reposts even after that year period
Are you going to ditch it all together and keep working on your startups, or are you planning on getting some degree (possibly from MIT/Harvard, trust me, you probably can)?
I haven't decided yet (still have about 7 months to do so). I guess it really depends on which direction life takes me, but I really can't commit to either option at this point.